Question

我正在使用AFNetworking 2.0从我正在构建的服务中读取JSON（现在在localhost上）。很正常的东西。

Node正在发送JSON，如下所示：

res.setHeader('Content-Type','application/json');
res.end( JSON.stringify(...));

我的iOS第一遍代码试图像这样读取数据：

typedef void(^NextBlock)();
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

manager.responseSerializer = [AFJSONResponseSerializer serializer];
[manager GET:self.newestTimestampURL.absoluteString
    parameters:nil
    success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        //NSDictionary *response =
        NSLog(@"got %@", responseObject );
    }
    failure:^(AFHTTPRequestOperation *operation, NSError *error)
    {
        NSLog(@"fail %@", error );
    }];

这是我得到的错误：

Error Domain=AFNetworkingErrorDomain Code=-1016 "Request failed: unacceptable content-type: text/plain" UserInfo=0xb783e30 {NSErrorFailingURLKey=http://localhost:3000/api/v1/log/newest, AFNetworkingOperationFailingURLResponseErrorKey=<NSHTTPURLResponse: 0xb656a70> { URL: http://localhost:3000/api/v1/log/newest } { status code: 200, headers {
Connection = "keep-alive";
ContentType = "application/json";
Date = "Fri, 27 Dec 2013 20:58:50 GMT";
"Transfer-Encoding" = Identity;
} }, NSLocalizedDescription=Request failed: unacceptable content-type: text/plain}

我可以卷曲（-i）url http://localhost:3000/api/v1/log/newest并获取我期望的数据，并且它是application / json，如预期的那样。如果我在我的Web浏览器中加载该数据，我会按照预期的工具检查器获得JSON。

但是使用AFNetworking，我得到了这个神秘的“不可接受的内容类型：text / plain”错误。有什么想法吗？

注意：我之前从未使用过AFNetworking，所以我可能错误地使用它。

Answer 1

服务器似乎正在发送＆＃34; text / html＆＃34;，默认情况下不支持此类型。添加@＆＃34; text / html＆＃34; for＆＃34; acceptableContentTypes＆＃34;

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];

Answer 2

manager.responseSerializer = [AFHTTPResponseSerializer serializer];

为我工作。

Answer 3

为我工作。

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/plain"];

Answer 4

只需使用：

（SWIFT）：

manager.responseSerializer.acceptableContentTypes = NSSet(object: "text/plain") as Set<NSObject>

OBJ-C：

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/plain"];

Answer 5

我已经按照@KIO发布的答案，但它在我的方案中没有用。

在得到许多答案之后，我能够找到适合我的解决方案。

AFHTTPRequestOperationManager *operation = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:url];
    operation.responseSerializer = [AFJSONResponseSerializer serializer];

AFJSONResponseSerializer *jsonResponseSerializer = [AFJSONResponseSerializer serializer];

NSMutableSet *jsonAcceptableContentTypes = [NSMutableSet setWithSet:jsonResponseSerializer.acceptableContentTypes];
[jsonAcceptableContentTypes addObject:@"text/plain"];
jsonResponseSerializer.acceptableContentTypes = jsonAcceptableContentTypes;
operation.responseSerializer = jsonResponseSerializer;

Answer 6

NSURL *url = [NSURL URLWithString:RSS_WORLD_NEWS];
NSURLRequest *request = [NSURLRequest requestWithURL:url];

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];

// Make sure to set the responseSerializer correctly
operation.responseSerializer = [AFXMLParserResponseSerializer serializer];

operation.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/rss+xml"];

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

    NSXMLParser *XMLParser = (NSXMLParser *)responseObject;
    [XMLParser setShouldProcessNamespaces:YES];

     XMLParser.delegate = self;
     [XMLParser parse];

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

    [MBProgressHUD hideHUDForView:self.view animated:YES];
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error Retrieving contents"
                                                        message:[error localizedDescription]
                                                       delegate:nil
                                              cancelButtonTitle:@"Ok"
                                              otherButtonTitles:nil];
    [alertView show];

}];

[operation start];

为我工作

Answer 7

更新了Swift解决方案。

如果您在Swift中使用AFNetworking。那么这个解决方案可能对你有帮它将接受大多数内容类型。

let manager=AFHTTPRequestOperationManager()

            manager.responseSerializer = AFJSONResponseSerializer(readingOptions: NSJSONReadingOptions.AllowFragments) as AFJSONResponseSerializer

            manager.requestSerializer = AFJSONRequestSerializer() as AFJSONRequestSerializer

            manager.responseSerializer.acceptableContentTypes = NSSet(objects:"application/json", "text/html", "text/plain", "text/json", "text/javascript", "audio/wav") as Set<NSObject>

AFNetworking 2.0 - “不可接受的内容类型：text / plain”

7 个答案: